netfilter: x_tables: use NFPROTO_* in extensions

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
diff --git a/net/netfilter/xt_NOTRACK.c b/net/netfilter/xt_NOTRACK.c
index 6c9de61..b9ee268 100644
--- a/net/netfilter/xt_NOTRACK.c
+++ b/net/netfilter/xt_NOTRACK.c
@@ -35,14 +35,14 @@
 static struct xt_target notrack_tg_reg[] __read_mostly = {
 	{
 		.name		= "NOTRACK",
-		.family		= AF_INET,
+		.family		= NFPROTO_IPV4,
 		.target		= notrack_tg,
 		.table		= "raw",
 		.me		= THIS_MODULE,
 	},
 	{
 		.name		= "NOTRACK",
-		.family		= AF_INET6,
+		.family		= NFPROTO_IPV6,
 		.target		= notrack_tg,
 		.table		= "raw",
 		.me		= THIS_MODULE,